package com.zbar.lib;
import android.content.Context;
import android.content.res.AssetFileDescriptor;
import android.graphics.Point;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Handler;
import android.os.Vibrator;
import android.support.v7.app.ActionBarActivity;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import com.zbar.lib.camera.CameraManager;
import com.zbar.lib.decode.CaptureHandler;
import com.zbar.lib.decode.InactivityTimer;
import java.io.IOException;
/**
* 作者: 陈涛(1076559197@qq.com)
*
* 时间: 2014年5月9日 下午12:25:31
*
* 版本: V_1.0.0
*
* 描述: 扫描界面
*/
public class CaptureView implements Callback, View.OnClickListener {
private ActionBarActivity activity;
private View view;
private OnCaptureListener onCaptureListener;
private CaptureHandler handler;
private boolean hasSurface;
private InactivityTimer inactivityTimer;
private MediaPlayer mediaPlayer;
private boolean playBeep;
private static final float BEEP_VOLUME = 0.50f;
private boolean vibrate;
private int x = 0;
private int y = 0;
private int cropWidth = 0;
private int cropHeight = 0;
private RelativeLayout mContainer, mCropLayout;
private boolean isNeedCapture = false;
public CaptureView(ActionBarActivity activity){
this.activity = activity;
init();
}
public View getView(){
return view;
}
public void setOnCaptureListener(OnCaptureListener onCaptureListener){
this.onCaptureListener = onCaptureListener;
}
public boolean isNeedCapture() {
return isNeedCapture;
}
public void setNeedCapture(boolean isNeedCapture) {
this.isNeedCapture = isNeedCapture;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
public int getCropWidth() {
return cropWidth;
}
public void setCropWidth(int cropWidth) {
this.cropWidth = cropWidth;
}
public int getCropHeight() {
return cropHeight;
}
public void setCropHeight(int cropHeight) {
this.cropHeight = cropHeight;
}
/**
* 设置扫描区域尺寸
* @param width 宽高相等
*/
public void setCropLayoutSize(int width, int height){
mCropLayout.getLayoutParams().width = width;
mCropLayout.getLayoutParams().height = height;
}
/** Called when the activity is first created. */
private void init() {
view = View.inflate(activity, R.layout.inc_scanner, null);
// 初始化 CameraManager
CameraManager.init(activity);
hasSurface = false;
inactivityTimer = new InactivityTimer(activity);
mContainer = (RelativeLayout) view.findViewById(R.id.capture_containter);
mCropLayout = (RelativeLayout) view.findViewById(R.id.capture_crop_layout);
view.findViewById(R.id.button_back).setOnClickListener(this);
view.findViewById(R.id.button_light).setOnClickListener(this);
ImageView mQrLineView = (ImageView) view.findViewById(R.id.capture_scan_line);
TranslateAnimation mAnimation = new TranslateAnimation(TranslateAnimation.ABSOLUTE, 0f, TranslateAnimation.ABSOLUTE, 0f,
TranslateAnimation.RELATIVE_TO_PARENT, 0f, TranslateAnimation.RELATIVE_TO_PARENT, 0.66f);
mAnimation.setDuration(1500);
mAnimation.setRepeatCount(-1);
mAnimation.setRepeatMode(Animation.REVERSE);
mAnimation.setInterpolator(new LinearInterpolator());
mQrLineView.setAnimation(mAnimation);
}
boolean flag = true;
protected void light(View v) {
if (flag) {
flag = false;
// 开闪光灯
v.setBackgroundResource(R.drawable.icon_flashlight_on);
CameraManager.get().openLight();
} else {
flag = true;
// 关闪光灯
v.setBackgroundResource(R.drawable.icon_flashlight_off);
CameraManager.get().offLight();
}
}
@SuppressWarnings("deprecation")
public void onResume() {
SurfaceView surfaceView = (SurfaceView) view.findViewById(R.id.capture_preview);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
if (hasSurface) {
initCamera(surfaceHolder);
} else {
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
playBeep = true;
AudioManager audioService = (AudioManager) activity.getSystemService(Context.AUDIO_SERVICE);
if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
playBeep = false;
}
initBeepSound();
vibrate = true;
}
public void onPause() {
if (handler != null) {
handler.quitSynchronously();
handler = null;
}
CameraManager.get().closeDriver();
}
public void onDestroy() {
inactivityTimer.shutdown();
}
public void handleDecode(String result) {
inactivityTimer.onActivity();
playBeepSoundAndVibrate();
if (onCaptureListener != null){
onCaptureListener.onCapture(result);
} else {
throw new RuntimeException("缺少扫码结果处理接口");
}
}
/**
* 扫描后调用此方法可重新启动扫描功能
*/
public void restartPreview(){
// 连续扫描，不发送此消息扫描一次结束后就不能再次扫描
handler.sendEmptyMessage(R.id.restart_preview);
}
private void initCamera(SurfaceHolder surfaceHolder) {
try {
CameraManager.get().openDriver(surfaceHolder);
Point point = CameraManager.get().getCameraResolution();
int w = point.y;
int h = point.x;
int x = mCropLayout.getLeft() * w / mContainer.getWidth();
int y = mCropLayout.getTop() * h / mContainer.getHeight();
int cropWidth = mCropLayout.getWidth() * w / mContainer.getWidth();
int cropHeight = mCropLayout.getHeight() * h / mContainer.getHeight();
setX(x);
setY(y);
setCropWidth(cropWidth);
setCropHeight(cropHeight);
// 设置是否需要截图
setNeedCapture(true);
} catch (IOException | RuntimeException ioe) {
return;
}
if (handler == null) {
handler = new CaptureHandler(CaptureView.this);
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (!hasSurface) {
hasSurface = true;
initCamera(holder);
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
hasSurface = false;
}
public Handler getHandler() {
return handler;
}
private void initBeepSound() {
if (playBeep && mediaPlayer == null) {
activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnCompletionListener(beepListener);
AssetFileDescriptor file = activity.getResources().openRawResourceFd(R.raw.beep);
try {
mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());
file.close();
mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
mediaPlayer.prepare();
} catch (IOException e) {
mediaPlayer = null;
}
}
}
private static final long VIBRATE_DURATION = 200L;
private void playBeepSoundAndVibrate() {
if (playBeep && mediaPlayer != null) {
mediaPlayer.start();
}
if (vibrate) {
Vibrator vibrator = (Vibrator) activity.getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(VIBRATE_DURATION);
}
}
private final OnCompletionListener beepListener = new OnCompletionListener() {
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.seekTo(0);
}
};
@Override
public void onClick(View v) {
final int id = v.getId();
if (id == R.id.button_back){
activity.finish();
} else if (id == R.id.button_light){
light(v);
}
}
/**
* 捕获成功的接口
*/
public interface OnCaptureListener{
public void onCapture(String result);
}
}